write tests for isTruthy/isFalsey and add link to them in README.md

Author: DenSpirit

README.md

@@ -166,8 +166,8 @@ Visit the: [code](lib/comparison.js) | [unit tests](test/comparison.js) | [issue
 * **[gt](#gt)** ([code](lib/comparison.js#L182) | [tests](test/comparison.js#L214))
 * **[gte](#gte)** ([code](lib/comparison.js#L206) | [tests](test/comparison.js#L245))
 * **[has](#has)** ([code](lib/comparison.js#L226) | [tests](test/comparison.js#L260))
-* **[isFalsey](#isFalsey)** ([code](lib/comparison.js#L268) | [no tests])
-* **[isTruthy](#isTruthy)** ([code](lib/comparison.js#L283) | [no tests])
+* **[isFalsey](#isFalsey)** ([code](lib/comparison.js#L268) | [tests](test/comparison.js#L327))
+* **[isTruthy](#isTruthy)** ([code](lib/comparison.js#L283) | [tests](test/comparison.js#L339))
 * **[ifEven](#ifEven)** ([code](lib/comparison.js#L304) | [tests](test/comparison.js#L344))
 * **[ifNth](#ifNth)** ([code](lib/comparison.js#L321) | [tests](test/comparison.js#L356))
 * **[ifOdd](#ifOdd)** ([code](lib/comparison.js#L344) | [tests](test/comparison.js#L379))

test/comparison.js

@@ -324,6 +324,30 @@ describe('comparison', function() {
     });
   });
 
+  describe('isFalsey', function() {
+    it('should render block if given value is falsey.', function() {
+      var fn = hbs.compile('{{#if (isFalsey value)}}A{{else}}B{{/if}}');
+      assert.equal(fn({value: 'nope'}), 'A');
+    });
+
+    it('should render inverse if given value is truthy', function() {
+      var fn = hbs.compile('{{#if (isFalsey value)}}A{{else}}B{{/if}}');
+      assert.equal(fn({value: 'CCC'}), 'B');
+    });
+  });
+
+  describe('isTruthy', function() {
+    it('should render block if given value is truthy.', function() {
+      var fn = hbs.compile('{{#if (isTruthy value)}}A{{else}}B{{/if}}');
+      assert.equal(fn({value: 'CCC'}), 'A');
+    });
+
+    it('should render inverse if given value is not truthy', function() {
+      var fn = hbs.compile('{{#if (isTruthy value)}}A{{else}}B{{/if}}');
+      assert.equal(fn({value: 'nope'}), 'B');
+    });
+  });
+
   describe('eq', function() {
     it('should render a block if the value is equal to a given number.', function() {
       var fn = hbs.compile('{{#eq number compare=8}}A{{/eq}}');